Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

with GMP kernel
with GMP kernel using --mt=pthread
with native kernel, including micro-assembler code
with native kernel, without micro-assembler
with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view:	top level - gp		Hit	Total	Coverage
Test:	PARI/GP v2.18.1 lcov report (development 30702-bddb8d6928)	Lines:	277	695	39.9 %
Date:	2026-02-23 02:23:56	Functions:	22	61	36.1 %
Legend:	Rating: low: < 75 % medium: >= 75 % high: >= 90 %